Tag Archives: brain

Dim light dims our brains – Study

Regular readers know I do a lot of work on the brain, my brain. Family members have suffered from both Alzheimer’s and dementia. At the age of 78, I want to continue enjoying my life and mental capacity.

Now comes Michigan State University with info on how light affects our mental functioning.

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Spending too much time in dimly lit rooms and offices may actually change the brain’s structure and hurt one’s ability to remember and learn, indicates groundbreaking research by Michigan State University neuroscientists.

The researchers studied the brains of Nile grass rats (which, like humans, are diurnal and sleep at night) after exposing them to dim and bright light for four weeks. The rodents exposed to dim light lost about 30 percent of capacity in the hippocampus, a critical brain region for learning and memory, and performed poorly on a spatial task they had trained on previously.

The rats exposed to bright light, on the other hand, showed significant improvement on the spatial task. Further, when the rodents that had been exposed to dim light were then exposed to bright light for four weeks (after a month-long break), their brain capacity – and performance on the task – recovered fully.

The study, funded by the National Institutes of Health, is the first to show that changes in environmental light, in a range normally experienced by humans, leads to structural changes in the brain. Americans, on average, spend about 90 percent of their time indoors, according to the Environmental Protection Agency. Continue reading

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Send your brain a Valentine

We are sending our loved ones greetings cards and chocolates next week. Let’s not forget that two pound organ in our heads that keeps the show on the road. 

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Here are 10 tips from the Alzheimer’s Association to help protect your brain from decline  as you age. Please don’t wait till you are in your 60’s to start thinking about your brain health. The sooner your pay attention to it the better off you will be. 
1 Break a sweat
Engage in regular cardiovascular exercise that elevates your heart rate and increases blood flow to the brain and body. Several studies have found an association between physical activity and reduced risk of cognitive decline.

I write about exercise and the brain regularly. Check out my Page – Important facts about your brain (and exercise benefits) to learn more about this. 

2 Hit the books
Formal education in any stage of life will help reduce your risk of cognitive decline and dementia. For example, take a class at a local college, community center or online. Continue reading

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The impact of exercise on the brain

On the premise that one picture is worth 1000 words, here are 2000 words worth of pictures. Regular readers know I feel strongly about the positive impact of exercise on the brain. If you would like to read further on it, check out my Page – Important facts about your brain (and exercise benefits).

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Tony

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Aerobic exercise may ease some Alzheimer’s symptoms

Regular readers how focused I am on the connection between exercise and the brain. I lost three family members to Alzheimer’s Disease or another form of dementia. And, I just turned 78 two weeks ago. So, I was most interested in this report on the benefits of aerobic exercise on Alzheimer’s symptoms. When you finish reading, please check out my Page – Important facts about  your brain (and exercise benefits.)

Alzheimer’s Disease is a brain disorder that destroys memory and thinking skills over time. It is the most common form of dementia in older adults. There is presently no cure for the condition, though treatment options are available. Today, some 5.3 million Americans live with Alzheimer’s Disease, and it is the sixth leading cause of death in the United States. The number of older adults who will develop AD is expected to more than triple by 2050.

Geriatrics experts have suggested that exercising can improve brain health in older adults. The World Health Organization (WHO) has recommendations for how much older adults should exercise. They suggest that older adults perform 150 minutes a week of moderate exercise (such as brisk walking), 75 minutes a week of vigorous aerobic training, or a combination of the two types. The WHO also recommends older adults perform muscle-strengthening exercises on at least two or more days a week. Continue reading

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Miles between Davis and Mozart: Brains of Jazz and Classical Musicians Work Differently

Music is one of the great joys of my life. I have a bluetooth speaker on my bike and I listen to music on my daily rides. My iPhone has about 15 gigabytes of jazz, classics and classic rock so I have the entire spectrum available. Consuming music, however, is not the same as producing it.

Different processes occur in the brains of jazz and classical pianists while playing the same piece of music, researchers report in Neuroscience News.

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Keith Jarret, world-famous jazz pianist, once answered in an interview when asked if he would ever be interested in doing a concert where he would play both jazz and classical music: “No, that’s hilarious. […] It’s like a chosen practically impossible thing […] It’s [because of] the circuitry. Your system demands different circuitry for either of those two things.” Where non-specialists tend to think that it should not be too challenging for a professional musician to switch between styles of music, such as jazz and classical, it is actually not as easy as one would assume, even for people with decades of experience.

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9 Rules for Brain-Healthy Eating – Infographic

I don’t know what the Amen Clinic is, but this is a wonderful infographic of foods the help your brain function better.

Don’t forget that, like your body, your brain benefits from physical exercise, too. To read further on that, check out my Page – Important Facts About Your Brain (and Exercise Benefits).

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Tony

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Lack of Sleep Boosts Levels of Alzheimer’s Protein – Study

I wrote about the dangers of sleep deprivation earlier this week. Here is the opening paragraph of that post: Regular readers know that I am an old man and very highly value a good night’s sleep. That is not the way I felt 20 years ago when I was in the working world. In those days I felt strongly that sleep was an intrusion on my life and activities and resented having to do it. I got a little wiser as the years went by. Please check out my Page – How important is a good night’s sleep? for significantly more details on this very important aspect of living a long healthy life.

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Have you resolved to take better care of yourself in the new year? Here’s a relatively painless way to do it: Catch a few more zzz’s every night. A third of American adults don’t get enough sleep, according to the Centers for Disease Control and Prevention..

Chronic poor sleep has been linked to cognitive decline, and a new study from Washington University School of Medicine in St. Louis explains why: As a wakeful brain churns away through the night, it produces more of the Alzheimer’s protein amyloid beta than its waste-disposal system can handle. Levels of the protein rise, potentially setting off a sequence of changes to the brain that can end with dementia.

“This study is the clearest demonstration in humans that sleep disruption leads to an increased risk of Alzheimer’s disease through an amyloid beta mechanism,” said senior author Randall Bateman, MD, the Charles F. and Joanne Knight Distinguished Professor of Neurology. “The study showed that it was due to overproduction of amyloid beta during sleep deprivation.” Continue reading

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Why sleep deprivation affects each of us differently

Regular readers know that I am an old man and very highly value a good night’s sleep. That is not the way I felt 20 years ago when I was in the working world. In those days I felt strongly that sleep was an intrusion on my life and activities and resented having to do it. I got a little wiser as the years went by. Please check out my Page – How important is a good night’s sleep? for significantly more details on this very important aspect of living a long healthy life.

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Losing sleep in favor of some good holiday fun a few times each year is nothing to worry about, but chronic sleep deprivation can have adverse health effects. Some of us are affected more than others, however, and new research helps us understand why.

For some of us, it may be harder to perform certain cognitive tasks after a sleepless night.

With 50 to 70 million adults in the United States having a “sleep or wakefulness disorder,” the Centers for Disease Control and Prevention (CDC) consider sleep deprivation a “public health concern.”

Sleep loss is especially alarming given its status as a significant risk factor for traffic accidents and medical mishaps, as well as posing a danger to one’s health.

Insufficient sleep could increase the risk of high blood pressure, diabetes, obesity, and cancer, among others conditions.

Cognitively, sleep deprivation has a wide range of adverse effects. In fact, the CDC report that 23.2 percent of U.S. adults aged 20 and above have trouble concentrating, and another 18.2 percent say that they have trouble remembering things as a result of losing sleep. Continue reading

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How to age more slowly

Here is further information on the goal and idea of living a long life with a functioning brain throughout.

Tony

True Strange Library

Centenarians reach age 100 because they age more slowly. Genetics play a part in resisting damage that accumulatesover time, but there are things anyone can do to slow the aging process and improve health.

According to Israeli physician Nir Barzilai of the Institute for Aging Research at Albert Einstein College of Medicine in New York:

“There is no pattern. The usual recommendations for a healthy life — not smoking, not drinking, plenty of exercise, a well-balanced diet, keeping your weight down — they apply to us average people. But not to them. Centenarians are in a class of their own.” …

“Today’s changes in lifestyle do in fact contribute to whether someone dies at the age of 85 or before age 75.

But in order to reach the age of 100, you need a special genetic make-up. These people age differently. Slower. They end up dying of the same diseases…

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HOW DOES THE BRAIN STORE & PROCESS MEMORIES?

Regular readers know what a big fan I am of the brain and its function in our daily life. As a 77 year old, I am also supremely interested in keeping mine functioning into these, my later, years. Check out my Page Important facts about your brain (and exercise benefits.

Tony

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How Does The Brain Store & Process Memories?Every sight, smell, sound, touch, and specific memory is stored in the recesses of your mind—but what parts of your brain store specific types of sensory data? Read on to learn more about where your brain stores these memories and which parts of your brain control specific functions.

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Exercise increases brain size, new research finds

Here is another source of the same facts I have been reporting in this blog for some years now. Your brain gets as much benefit from your cardiovascular exercise as your body.

Aerobic exercise can improve memory function and maintain brain health as we age, a new Australian-led study has found.

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In a first of its kind international collaboration, researchers from NICM and the Division of Psychology and Mental Health at the University of Manchester in the UK examined the effects of aerobic exercise on a region of the brain called the hippocampus, which is critical for memory and other brain functions.

Brain health decreases with age, with the average brain shrinking by approximately five per cent per decade after the age of 40.

Studies in mice and rats have consistently shown that physical exercise increases the size of the hippocampus but until now evidence in humans has been inconsistent. (my emphasis)

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Cardio exercise strengthens both body and brain

With Thanksgiving looming, this is a great time to reaffirm our resolve to exercise regularly. OR, it is the ideal time to resolve to exercise regularly in the coming year and maybe begin to address physical and weight problems that we have neglected.

Regular readers know that I have posted numerous times on the value of exercise not only for our bodies, but also for our brains. On the top of this page is IMPORTANT FACTS ABOUT YOUR BRAIN.

If you click on that link you can find a page full of blog posts on the subject.

Our ancestors engaged in some serious cardio exercise just to get food.

Our ancestors engaged in some serious cardio exercise just to get food. No walking down a supermarket aisle for them.

And now, the New York Times joins in the fray with Gretchen Reynolds’s article Exercise and the Ever-Smarter Human Brain.
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Heart function linked to brain’s memory center – Study

This is fascinating and seems to bolster my thought that exercising the body benefits the brain a great deal. The concept of use it or lose it is widely known and accepted regarding physical development. It seems it also applies to mental makeup.  As above, so below.

Research by a team of Vanderbilt University Medical Center (VUMC) scientists suggests that older people whose hearts pump less blood have blood flow reductions in the temporal lobe regions of the brain, where Alzheimer’s pathology begins.

The brain, which accounts for only 2 percent of total body weight, typically receives 12 percent of blood flow from the heart — a level maintained by complex, automatic processes, which maintain consistent blood flow to the brain at all times.

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Angela Jefferson, Ph.D., director of the Vanderbilt Memory and Alzheimer’s Center, and colleagues investigated whether lower cardiac index (the amount of blood flowing out of the heart adjusted for body size) correlated with lower blood flow to the brain.

The purpose of the study was to better understand whether reductions in brain blood flow might explain clinical observations in prior research that have linked heart function to cognitive impairment, Alzheimer’s disease and dementia.

“We currently know a lot about how to prevent and medically manage many forms of heart disease, but we do not yet know how to prevent or treat Alzheimer’s disease,” Jefferson said. Continue reading

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Memory loss reversed in early Alzheimer’s – Study

Researchers have successfully reversed memory loss in a small number of people with early-stage Alzheimer’s disease using a comprehensive treatment program, which involves a combination of lifestyle changes, brain stimulation, and medication.

Researchers suggest the MEND program is highly effective for reversing memory loss.

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Memory improvements as a result of the treatment program have so far been sustained for 2 years, the researchers report, and some patients have even been able to return to work as a result.

Study co-author Dr. Dale Bredesen, of the Buck Institute on Research and Aging in Novato, CA, and colleagues recently published their findings in the journal Aging.

While the study only involved 10 patients, the researchers believe their findings may open the door to an effective therapy for cognitive decline.

“The magnitude of improvement in these 10 patients is unprecedented, providing additional objective evidence that this programmatic approach to cognitive decline is highly effective,” says Dr. Bredesen.

There are currently around 5.4 million people in the United States living with Alzheimer’s disease. Continue reading

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Cholesterol levels linked Alzheimer’s – MNT

I have mentioned previously about losing three family members to Alzheimer’s Disease and/or dementia. Hence, my own serious concern about these mental conditions. I remember my aunt whom Alzheimer’s took had very high cholesterol late in life and had been warned by her doctor that she needed to get her numbers down. So, this study from  Medical News Today published several years ago had real meaning for me.

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Project leader Bruce Reed, a professor of neurology at the University of California (UC) Davis, and associate director of its Alzheimer’s Disease Center, says:

“Our study shows that both higher levels of HDL – good – and lower levels of LDL – bad – cholesterol in the bloodstream are associated with lower levels of amyloid plaque deposits in the brain.”

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7 steps for brain health from childhood to old age – AHA

The American Heart Association (AHA) has a superb rundown on the benefits of a healthy lifestyle, literally from cradle to grave. I can’t tell you how gratifying it is to see these concepts broadcast by the mainstream health outlets like the AHA. The following is directly from them. At the end I have listed some of my posts which flesh out these steps. Remember, eat less; move more; live longer.

A healthy lifestyle benefits your brain as much as the rest of your body — and may lessen the risk of cognitive decline (a loss of the ability to think well) as you age, according to a new advisory from the American Heart Association/American Stroke Association.

 

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Both the heart and brain need adequate blood flow, but in many people, blood vessels slowly become narrowed or blocked over the course of their life, a disease process known as atherosclerosis, the cause of many heart attacks and strokes. Many risk factors for atherosclerosis can be modified by following a healthy diet, getting enough physical activity, avoiding tobacco products and other strategies.

“Research summarized in the advisory convincingly demonstrates that the same risk factors that cause atherosclerosis, are also major contributors to late-life cognitive impairment and Alzheimer’s disease. By following seven simple steps — Life’s Simple 7 — not only can we prevent heart attack and stroke, we may also be able to prevent cognitive impairment,” said vascular neurologist Philip Gorelick, M.D., M.P.H., the chair of the advisory’s writing group and executive medical director of Mercy Health Hauenstein Neurosciences in Grand Rapids, Michigan.

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